Solvent extraction mixer settler apparatus

摘要

A mixer settler [1] comprises a settling tank [30], an organic launder [40] provided within the settling tank [30], an aqueous launder [50] provided within the settling tank [30], and an isolated aqueous weir box [70] which is positioned internally or externally relative to an outer profile of the mixer settler [1], the isolated aqueous weir box [70] being at least partially operatively isolated from the settling tank [30] by the aqueous launder [50]. The isolated aqueous weir box [70] comprises an adjustable weir [76] which separates a recycle chamber [72] from an advance chamber [74] therein. The organic launder [40] is operably connected to an organic advance effluent pipe [80], and the aqueous launder [50] is operably connected to the isolated aqueous weir box [70]. The organic launder [40] may be operably connected to an isolated organic weir box [60] which is separate from the isolated aqueous weir box [70], and may further comprise an adjustable weir [66] which separates a collection chamber [62] from an advance chamber [64]. Also disclosed, is a kit for modifying or fabricating a mixer settler [1], as well as a solvent extraction process.

主权项

1. A co-current mixer settler [1] comprising:
a settling tank [30]; an organic launder [40] provided within the settling tank [30], the organic launder being operably connected to an organic advance effluent pipe [80] and provided adjacent a distal downstream portion of the settling tank [30]; and, an aqueous launder [50] provided within the settling tank [30] and being positioned lower than the organic launder [40] so as to allow submersion during operation, the aqueous launder [50] being operably connected to an isolated aqueous weir box [70] which is positioned internally or externally relative to an outer profile of the mixer settler [1] and which is separated from the settling tank [30] by a wall [36], the isolated aqueous weir box [70] communicating with the settling tank [30] via the aqueous launder [50]; wherein said isolated aqueous weir box [70] comprises a recycle chamber [72], an advance chamber [74], and an adjustable weir [76] which separates the recycle chamber [72] from the advance chamber [74]; and, wherein at least one of the organic launder [40] and the aqueous launder [50] comprises a pipe [42, 52] having one or more perforations, apertures, or slits [44, 54] therein, the pipe [42, 52] having a tubular cross-section mounted to and extending across a width of the settling tank [30].